forked from hfiguiere/exifprobe
-
Notifications
You must be signed in to change notification settings - Fork 0
/
maker_generic.c
1595 lines (1491 loc) · 65.6 KB
/
maker_generic.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
/* EXIFPROBE - TIFF/JPEG/EXIF image file probe */
/* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
/* Copyright (C) 2002,2005 by Duane H. Hesser. All rights reserved. */
/* */
/* See the file LICENSE.EXIFPROBE for terms of use. */
/* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
#ifndef lint
static char *ModuleId = "@(#) $Id: maker_generic.c,v 1.40 2005/07/24 21:34:37 alex Exp $";
#endif
/* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
/* "Generic" routines for makernotes which use TIFF IFD structure */
/* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <ctype.h>
#include "defs.h"
#include "summary.h"
#include "maker.h"
#include "datadefs.h"
#include "maker_datadefs.h"
#include "camera_names.h"
#include "misc.h"
#include "tags.h"
#include "maker_extern.h"
#include "extern.h"
/* Read a makernote at the offset given in the passed maker_entry. */
/* Checks for data with a TIFF IFD structure at the makernote offset, */
/* possibly offset by a maker name string and/or a new TIFF header */
/* (e.g. some later Nikons). Notes which pass the test are scanned */
/* and printed. If the note is in IFD format but the maker is */
/* unknown, a "bare bones" entry will be printed, with tag numbers, */
/* type, etc. If the maker is known, tag names, undefined values and */
/* "interpretations" of the data may be printed. MakerNotes with */
/* unknown/non-ifd structures could be dispatched to specialized */
/* routines, but at this time I do not have information on any of */
/* those. Unknown notes (or notes with invalid IFD entries) can be */
/* dumped in hex/ascii by user option (-M). 'Undefined" data may be */
/* similarly dumped by the -U option, if maker-specific routines */
/* don't handle it. */
/* The return is the offset of the end of the note; if the note */
/* cannot be read, return is 0L. */
/* end_of_note: calculated from start offset and 'count' in parent */
/* entry */
/* max_value_offset: maximum offset reached by an entry value which */
/* begins within the note, as defined by the count. Used... */
/* max_end_offset: maximum offset reached by data referenced by any */
/* entry, even if 'outside' the note */
/* value_end_offset: maximum offset reached by the current entry's */
/* offset value */
/* max_in_note_tagoffset: the starting offset of the last tag value */
/* that begins within the note boundaries. */
/* min_out_of_note_tagoffset: the start offset of the first tag with */
/* value which starts beyond the end of the note. */
/* The only rule is that thre are no rules... */
unsigned long
process_makernote(FILE *inptr,unsigned short byteorder,
struct ifd_entry *maker_entry,unsigned long fileoffset_base,
unsigned long max_offset,struct image_summary *summary_entry,
char *parent_name,int indent)
{
struct ifd_entry *entry_ptr;
struct maker_scheme *maker_scheme;
unsigned long maker_offset = 0UL;
unsigned long maker_count = 0UL;
unsigned long max_value_offset = 0UL;
unsigned long max_end_offset = 0UL;
unsigned long value_end_offset = 0UL;
unsigned long max_in_note_tagoffset = 0UL;
unsigned long min_out_of_note_tagoffset = 0UL;
unsigned long start_offset = 0UL;
unsigned long dumplength = 0UL;
unsigned long end_of_note = 0UL;
unsigned long next_ifd_offset = 0UL;
unsigned long current_offset;
unsigned long start_entry_offset;
unsigned long entry_offset,value_offset;
char *prefix,*tprefix,*swname;
char *nameoftag = CNULL;
char *fulldirname = CNULL;
int entry_num,num_entries,make,model;
int tagindent = 0;
int tagwidth = 0;
int invalid = 0;
int scheme_indent = 0;
int value_is_offset = 0;
int use_second_pass = 0;
int chpr = 0;
if(inptr && maker_entry)
{
PUSHCOLOR(MAKER_COLOR);
if(summary_entry)
summary_entry->filesubformat |= FILESUBFMT_MNOTE;
/* Save these; they're in static storage in the maker_entry */
/* and will be overwritten when entry reading starts. */
maker_offset = maker_entry->value;
maker_count = maker_entry->count;
if(maker_count > 4UL)
end_of_note = maker_offset + maker_count + fileoffset_base;
else if(maker_count == 4UL)
{
/* special case, for certain Casio MakerNotes which use */
/* 4-byte UNDEFINED as though it were a LONG offset */
if(maker_entry->value_type == UNDEFINED)
maker_offset = to_ulong((unsigned char *)&maker_entry->value,byteorder);
/* This pretty much forces maker_scheme to PLAIN */
maker_count=0L;
}
else
goto cant_dumpit;
/* Clear any previous scheme structure */
/* This must be done before model() number is called. */
clear_makerscheme();
/* Get make and model from the global names saved from IFD0 */
/* Override real names if -m, -l, -s */
if(Use_Make_name)
make = maker_number(Use_Make_name);
else
make = maker_number(Make_name);
if(Use_Software_name)
swname = Use_Software_name;
else
swname = Software_name;
/* The camera-specific model number routine may fill in the */
/* note_version field in the scheme structure if the model is */
/* recognized and has more than 1 note version. Unknown */
/* models will be tested later or defaulted */
if(Use_Model_name)
model = model_number(make,Use_Model_name,swname);
else
model = model_number(make,Model_name,swname);
/* start_offset is where the note begins, relative to the */
/* start of the file. */
start_offset = start_entry_offset = maker_offset + fileoffset_base;
nameoftag = tagname(maker_entry->tag);
fulldirname = splice(parent_name,".",nameoftag);
/* The MakerNote should be written within the values section */
/* of the Exif ifd, but sometimes is not. 'max_offset', if */
/* set, will be the end of the parent ifd (Exif). Mark it to */
/* indicate that the MakerNote is out of place. */
if(max_offset && (start_offset > max_offset))
prefix = ">";
else
prefix = "@";
if(PRINT_SECTION)
{
print_tag_address(SECTION,start_offset,indent,prefix);
chpr = printf("<%s> length %lu, ",nameoftag,
maker_count ? maker_count: maker_entry->count);
}
else if(!(PRINT_VALUE_AT_OFFSET))
{
tagwidth = MAKERTAGWIDTH;
if(!(PRINT_LONGNAMES))
tagwidth -= strlen(nameoftag) + 1;
/* When SECTIONS are not printed, provide these items as */
/* "pseudotags". */
if((PRINT_TAGINFO) || (PRINT_VALUE))
print_tag_address(ENTRY,HERE,indent+SMALLINDENT,"*");
if(PRINT_TAGINFO)
{
if((PRINT_LONGNAMES))
chpr += printf("%s.",parent_name);
chpr += printf("%s.",nameoftag);
chpr += printf("%-*.*s",tagwidth,tagwidth,"Offset");
}
if((PRINT_VALUE))
chpr += printf(" = @%lu",start_offset);
chpr = newline(chpr);
if((PRINT_TAGINFO) || (PRINT_VALUE))
print_tag_address(ENTRY,HERE,indent+SMALLINDENT,"*");
if(PRINT_TAGINFO)
{
if((PRINT_LONGNAMES))
chpr += printf("%s.",parent_name);
chpr += printf("%s.",nameoftag);
chpr += printf("%-*.*s",tagwidth,tagwidth,"Length");
}
if((PRINT_VALUE))
chpr += printf(" = %lu",maker_count ? maker_count: maker_entry->count);
chpr = newline(chpr);
if((PRINT_TAGINFO) || (PRINT_VALUE))
print_tag_address(ENTRY,HERE,indent+SMALLINDENT,"*");
if(PRINT_TAGINFO)
{
if((PRINT_LONGNAMES))
chpr += printf("%s.",parent_name);
chpr += printf("%s.",nameoftag);
chpr += printf("%-*.*s",tagwidth,tagwidth,"Scheme");
}
}
/* Discover, if possible, the 'scheme' by which the MakerNote */
/* is stored. */
scheme_indent = charsprinted();
maker_scheme = find_makerscheme(inptr,maker_offset,fileoffset_base,
byteorder,maker_count,make,model);
/* If scheme debugging is in effect, the type info below */
/* needs to be indented a bit, since the debug output splits */
/* the starting <MakerNote> line. */
if(PRINT_SCHEME_DEBUG)
putindent(scheme_indent + chpr + 2);
/* Print a brief description of the scheme found. Enclose it */
/* in quotes if not in a SECTION line */
if((PRINT_SECTION) || ((PRINT_VALUE) && !(PRINT_VALUE_AT_OFFSET)))
{
if(!(PRINT_SECTION))
chpr += printf(" = '");
switch(maker_scheme->scheme_type)
{
case HAS_ID_SCHEME:
if(maker_scheme->offsets_relative_to == START_OF_NOTE)
chpr += printf("Note-relative offset ");
else if(maker_scheme->offsets_relative_to == START_OF_ENTRY)
chpr += printf("Entry-relative offset ");
chpr += printf("ID");
break;
case HAS_ID_PLUS_TIFFHDR_SCHEME:
chpr += printf("ID+TIFFheader");
break;
case PLAIN_IFD_SCHEME:
if(maker_scheme->offsets_relative_to == START_OF_NOTE)
chpr += printf("Note-relative offset ");
else if(maker_scheme->offsets_relative_to == START_OF_ENTRY)
chpr += printf("Entry-relative offset ");
else
chpr += printf("Plain ");
chpr += printf("IFD");
if(maker_count == 0) /* some old Casio */
chpr += printf(" (from UNDEFINED offset)");
break;
/* New schemes can be added here. */
case UNKNOWN_SCHEME:
default:
/* dump a couple of lines, unless user says otherwise */
next_ifd_offset = 0UL;
chpr += printf("unknown");
if(PRINT_SECTION)
chpr += printf(" scheme");
if(PRINT_SECTION && !(PRINT_MAKERDUMP))
{
chpr = newline(1);
if(maker_count < DEF_SHORTDUMP)
dumplength = maker_count;
else
dumplength = DEF_SHORTDUMP;
hexdump(inptr,start_offset,maker_count,dumplength,12,
indent,SUBINDENT);
if(maker_count > dumplength)
{
printred(" (use -M to see more)");
chpr = newline(1);
}
}
else if((PRINT_VALUE))
printf("'");
chpr = newline(chpr);
if(PRINT_MAKERNOTE_SCHEME)
print_scheme(inptr,maker_scheme);
goto dumpit;
break;
}
if(!(PRINT_SECTION))
chpr = printf("'");
}
else
chpr = newline(chpr);
/* If printing a value in LIST mode, it's done; if in the */
/* middle of a section heading in SECTION mode, there's more */
/* heading to print. */
if(PRINT_SECTION)
chpr += printf(" scheme,");
else if((PRINT_VALUE))
chpr = newline(chpr);
num_entries = maker_scheme->num_entries;
byteorder = maker_scheme->note_byteorder;
if((maker_scheme->scheme_type == HAS_ID_PLUS_TIFFHDR_SCHEME) ||
(maker_scheme->offsets_relative_to == START_OF_NOTE))
{
fileoffset_base = maker_scheme->fileoffset_base;
start_entry_offset = fileoffset_base + maker_scheme->ifd_offset + 2;
}
else
start_entry_offset = start_offset + maker_scheme->ifd_offset + 2;
if(PRINT_SECTION)
{
chpr = printf(" %d entries starting at offset %#lx/%lu",num_entries,
start_entry_offset,start_entry_offset);
chpr = newline(chpr);
}
if(PRINT_MAKERNOTE_SCHEME)
print_scheme(inptr,maker_scheme);
if((maker_scheme->id_length > 0) && (PRINT_ENTRY))
{
print_tag_address(ENTRY,start_offset, indent,prefix);
extraindent(SUBINDENT);
if((PRINT_LONGNAMES))
chpr += printf("%s.%s.",parent_name,nameoftag);
chpr = printf("%sId",nameoftag);
if((PRINT_VALUE))
{
tagwidth = MAKERTAGWIDTH - strlen(nameoftag) - 2;
putindent(tagwidth);
chpr += printf(" = '%s'",maker_scheme->id);
}
chpr = newline(chpr);
}
if(((maker_scheme->scheme_type == HAS_ID_PLUS_TIFFHDR_SCHEME)) &&
(PRINT_SECTION))
{
print_tag_address(SECTION,fileoffset_base,indent + SMALLINDENT,prefix);
if(print_tiff_header(TIFF_MAGIC,maker_scheme->note_byteorder,SECTION) == 0)
{
chpr = printf(" ifd offset = %#x/%d)",maker_scheme->ifd_offset,
maker_scheme->ifd_offset);
if(fileoffset_base)
{
chpr += printf(" (+ %lu = %#lx/%lu)",fileoffset_base,
fileoffset_base + maker_scheme->ifd_offset,
fileoffset_base + maker_scheme->ifd_offset);
}
}
chpr = newline(chpr);
}
/* At this point, the note has been "verified" to be in TIFF */
/* IFD format, and can be read normally in that fashion. */
/* Maker-specific information is handled in the print_maker */
/* routines, according to the noteversion derived from the */
/* make and model numbers. */
/* Scheme validation is not entirely robust, however, so the */
/* code below bails out at the first sign of an invalid */
/* entry, and hexdumps the data if wanted. */
indent += SMALLINDENT;
current_offset = entry_offset = start_entry_offset;
value_is_offset = 0;
for(entry_num = 0; entry_num < num_entries; ++entry_num)
{
print_tag_address(ENTRY,entry_offset,indent,prefix);
tagindent = charsprinted(); /* in case error msg needed */
entry_ptr = read_ifd_entry(inptr,byteorder,entry_offset);
if((entry_ptr->value_type == 0) || (entry_ptr->value_type > DOUBLE) ||
ferror(inptr) || feof(inptr))
{
++invalid;
}
else
invalid = 0;
if(maker_scheme->offsets_relative_to == START_OF_ENTRY)
fileoffset_base = entry_offset;
entry_offset = current_offset = ftell(inptr);
value_offset = print_makerentry(inptr,byteorder,
entry_ptr,fileoffset_base,
summary_entry,fulldirname,
indent,make,model);
if(invalid > 5)
{
if((PRINT_SECTION))
{
PUSHCOLOR(RED);
chpr += printf(" TOO MANY INVALID ENTRIES");
if((PRINT_MAKERDUMP))
chpr += printf(" (hexdump follows)");
else
chpr += printf(" (Use -M to hex/ascii dump)");
POPCOLOR();
chpr = newline(chpr);
}
else
{
chpr = newline(chpr);
PUSHCOLOR(RED);
chpr += printf("# WARNING: TOO MANY INVALID MAKERNOTE ENTRIES");
chpr += printf(" (note processing aborted)");
POPCOLOR();
chpr = newline(chpr);
}
goto dumpit;
}
if(value_offset == 0UL)
value_offset = entry_offset;
if(end_of_note)
{
if((value_offset < end_of_note) && (value_offset > max_value_offset))
max_value_offset = value_offset;
}
else if(value_offset > max_value_offset) {
max_value_offset = value_offset;
}
if((is_offset(entry_ptr) || maker_value_is_offset(entry_ptr,make,model)))
++use_second_pass;
}
/* Some makers write the next ifd offset as 0, as is normal */
/* for an IFD. Some write nothing. */
if(maker_scheme->no_nextifd_offset)
{
next_ifd_offset = 0L;
if((PRINT_SECTION) && (PRINT_ENTRY))
{
/* Since it isn't needed, just note it and move on. */
print_tag_address(SECTION,current_offset,indent,prefix);
printred("no next IFD offset used");
chpr = newline(1);
}
}
else
{
next_ifd_offset = read_ulong(inptr,byteorder,current_offset);
if(next_ifd_offset > 0L)
{
/* This should not happen, of course. */
if((PRINT_ADDRESS) && (PRINT_VALUE) && (PRINT_VALUE_AT_OFFSET))
{
print_tag_address(ENTRY,current_offset,indent,prefix);
chpr += printf("**** next IFD offset %lu ",next_ifd_offset);
next_ifd_offset += fileoffset_base;
chpr += printf("(+ %lu = %#lx/%lu)",fileoffset_base,
next_ifd_offset,next_ifd_offset);
if(next_ifd_offset < ftell(inptr))
{
printred(" # BAD NEXT IFD OFFSET");
next_ifd_offset = 0L;
}
chpr = newline(chpr);
}
else
next_ifd_offset += fileoffset_base;
}
else
{
if((PRINT_ADDRESS) && (PRINT_VALUE) && (PRINT_VALUE_AT_OFFSET))
{
print_tag_address(ENTRY,current_offset,indent,prefix);
chpr = printf("**** next IFD offset 0");
chpr = newline(chpr);
}
}
}
if(ferror(inptr))
{
chpr = printf(" READ NEXT IFD OFFSET FAILED ");
why(stdout);
clearerr(inptr); /* keep going... */
chpr = newline(1);
}
else
current_offset = ftell(inptr);
value_offset = current_offset;
if((max_value_offset == 0) || (current_offset > max_value_offset))
max_value_offset = current_offset;
/* Make a second pass over the entries, to print values of */
/* entries whose values are indirect. */
if(use_second_pass)
{
if((PRINT_VALUE) && (PRINT_ADDRESS) && (PRINT_VALUE_AT_OFFSET))
{
print_tag_address(ENTRY,value_offset,indent,prefix);
chpr = printf("============= VALUES, %s ============",nameoftag);
chpr = newline(chpr);
}
entry_offset = start_entry_offset;
for(entry_num = 0; entry_num < num_entries; ++entry_num)
{
entry_ptr = read_ifd_entry(inptr,byteorder,entry_offset);
if(ferror(inptr)) /* why didn't this happen above? */
goto dumpit;
if(maker_scheme->offsets_relative_to == START_OF_ENTRY)
fileoffset_base = entry_offset;
entry_offset = current_offset = ftell(inptr);
if(is_offset(entry_ptr) || maker_value_is_offset(entry_ptr,make,model))
{
/* If this is negative, it is assumed to be a */
/* length value which is intended to trigger */
/* processing of the previous entry, which is an */
/* offset (usually of a thumbnail which is */
/* specified by two tags)...so use the previous */
/* value_offset. Don't violate this convention! */
if(maker_value_is_offset(entry_ptr,make,model) >= 0)
value_offset = fileoffset_base + entry_ptr->value;
if(Debug & 0x10)
printf("SL:mvo=%lu,vo=%lu,veo=%lu, en=%lu ### prefix='%s'\n",
max_value_offset,value_offset,value_end_offset,end_of_note,prefix);
if((value_type_size(entry_ptr->value_type) * entry_ptr->count) <= 4UL)
value_end_offset = 0;
else
value_end_offset = value_offset +
(value_type_size(entry_ptr->value_type) * entry_ptr->count);
if(value_offset > end_of_note)
{
if(*prefix == '>')
tprefix = "+";
else
tprefix = ">";
}
else
tprefix = prefix;
if(Debug & 0x10)
printf("BP:mvo=%lu,vo=%lu,veo=%lu, meo=%lu, en=%lu ### prefix=%s\n",
max_value_offset,value_offset,value_end_offset,
max_end_offset,end_of_note,prefix);
if((PRINT_VALUE_AT_OFFSET))
{
value_end_offset =
print_offset_makervalue(inptr,byteorder,entry_ptr,
fileoffset_base,summary_entry,fulldirname,
tprefix,indent,make,model,1);
}
if(Debug & 0x10)
printf("AP:mvo=%lu,vo=%lu,veo=%lu, meo=%lu, en=%lu ### prefix=%s\n",
max_value_offset,value_offset,value_end_offset,
max_end_offset,end_of_note,prefix);
/* If the value is a section which STARTS past */
/* the announced end of the makernote it should */
/* not be regarded as part of the makernote, and */
/* should not contribute to the offset returned */
/* from this routine. */
if(end_of_note)
{
if((value_offset < end_of_note) && (value_end_offset > max_value_offset))
{
max_value_offset = value_end_offset;
max_in_note_tagoffset = value_offset;
}
}
else if((value_end_offset > max_value_offset))
max_value_offset = value_end_offset;
/* Keep track of actual maximum; tattle later */
if(value_end_offset > max_end_offset)
max_end_offset = value_end_offset;
if(end_of_note)
{
if((value_offset > end_of_note) && (min_out_of_note_tagoffset == 0))
min_out_of_note_tagoffset = value_offset;
}
if(Debug & 0x10)
printf("EL:mvo=%lu,vo=%lu,veo=%lu, meo=%lu, en=%lu ### prefix=%s\n",
max_value_offset,value_offset,value_end_offset,
max_end_offset,end_of_note,prefix);
}
current_offset = ftell(inptr);
}
}
else if(current_offset > max_value_offset)
max_value_offset = current_offset;
indent -= SMALLINDENT;
/* If the note is incompletely specified, point that out. If */
/* IFD entries are not being printed this message is not */
/* wanted. */
if((end_of_note && (max_value_offset < end_of_note)) &&
(PRINT_SECTION) && (PRINT_ENTRY) &&
!(LIST_MODE))
{
unsigned long printlength = 0;
print_tag_address(ENTRY,max_value_offset - 1,indent + SMALLINDENT,
"*");
chpr = printf("---- End of values before end of %s",nameoftag);
chpr = newline(chpr);
dumplength = end_of_note - max_value_offset;
/* dump at least the first couple of rows, just to see... */
if(PRINT_MAKERDUMP)
{
if((Max_makerdump == DUMPALL) || (Max_makerdump > dumplength))
printlength = dumplength;
else if(Max_makerdump > 0L)
printlength = Max_makerdump;
else if(Max_undefined > 0L)
printlength = Max_undefined > dumplength ? Max_undefined : dumplength;
}
else /* always print a little bit in this case */
{
if(dumplength > DEF_SHORTDUMP)
printlength = DEF_SHORTDUMP;
else
printlength = dumplength;
}
hexdump(inptr,max_value_offset,dumplength,printlength,12,
indent,SUBINDENT);
if(dumplength > printlength)
printred(" (use -M to see more)");
chpr = newline(1);
}
else if(maker_count == 0L)
{
end_of_note = max_value_offset - 1;
maker_count = end_of_note - start_offset;
if(!(PRINT_SECTION) && !(PRINT_VALUE_AT_OFFSET) && (PRINT_ENTRY))
{
tagwidth = MAKERTAGWIDTH;
if(!(PRINT_LONGNAMES))
tagwidth -= strlen(nameoftag) - 1;
/* rewrite this pseudotag, since the first one was */
/* wrong */
chpr = newline(chpr);
if((PRINT_TAGINFO) || (PRINT_VALUE))
print_tag_address(ENTRY,HERE,indent+SMALLINDENT,prefix);
if(PRINT_TAGINFO)
{
if((PRINT_LONGNAMES))
chpr += printf("%s.",parent_name);
chpr += printf("%s.",nameoftag);
chpr += printf("%-*.*s",tagwidth,tagwidth,"Length");
}
if((PRINT_VALUE))
chpr += printf(" = %lu",maker_count);
}
}
if(Debug & 0x10)
printf("END: mvo=%lu, en=%lu, meo=%lu\n",max_value_offset,end_of_note,max_end_offset);
if(end_of_note && (max_value_offset > (end_of_note + 1)) && max_in_note_tagoffset)
{
print_tag_address(SECTION,max_in_note_tagoffset,indent + SMALLINDENT,"!");
printred("# WARNING: values extend past end of MakerNote");
chpr = newline(chpr);
}
if(end_of_note && (max_end_offset > (end_of_note + 1)) && min_out_of_note_tagoffset)
{
print_tag_address(SECTION,min_out_of_note_tagoffset,indent + SMALLINDENT,"!");
printred("# WARNING: values referenced outside of MakerNote");
chpr = newline(chpr);
}
print_tag_address(SECTION,end_of_note - 1,indent,prefix);
if(PRINT_SECTION)
chpr = printf("</%s>",nameoftag);
if(next_ifd_offset)
{
if((PRINT_SECTION))
chpr += printf(" ");
PUSHCOLOR(RED);
chpr = printf("# WARNING! MakerNote has next ifd offset %lu",next_ifd_offset);
POPCOLOR();
}
chpr = newline(chpr);
POPCOLOR();
if(fulldirname)
free(fulldirname);
fulldirname = CNULL;
}
/* The offset passed back to the caller may be higher than the */
/* offset written above for the end of the note, if values are */
/* referenced past advertised end of note in a chunk that began */
/* before end of note. */
if(max_value_offset > end_of_note)
end_of_note = max_value_offset;
return(end_of_note);
dumpit:
if(PRINT_MAKERDUMP)
{
/* If no specific length is given for makernote data, limit */
/* the dump length to the length specified for undefined */
/* data. */
if(Max_makerdump == DUMPALL)
dumplength = maker_count;
else if(Max_makerdump > 0L)
{
dumplength = Max_makerdump;
/* In case the maker_count is botched, dump as much as */
/* asked */
if(maker_count < dumplength)
maker_count = dumplength;
}
else
dumplength = Max_undefined;
if(dumplength > 0L)
{
chpr = newline(chpr);
hexdump(inptr,start_offset,maker_count,dumplength,12,
indent,SUBINDENT);
chpr = newline(1);
}
}
if(PRINT_SECTION)
{
print_tag_address(SECTION,end_of_note - 1,indent,"-");
chpr = printf("</MakerNote>");
}
POPCOLOR();
chpr = newline(chpr);
clearerr(inptr);
if(maker_count)
return(end_of_note);
return(0L);
cant_dumpit:
clearerr(inptr);
chpr = printf(" INVALID MakerNote offset %lu",maker_offset);
chpr = newline(chpr);
return(0L);
}
/* Return a unique number for a given maker, (assigned in "maker.h") */
/* based upon a string, usually taken from a "Make" tag. This "magic */
/* number" will be used to select routines to print tagnames and to */
/* interpret data from MakerNotes for that maker. */
int
maker_number(char *make)
{
struct camera_name *maker_id;
int number = NO_MAKE;
if(make)
{
/* 'Camera_make' is a global parameter */
for(maker_id = Camera_make; maker_id && maker_id->name; ++maker_id)
{
if(strncasecmp(make,maker_id->name,maker_id->namelen) == 0)
{
number = maker_id->id;
break;
}
}
}
return(number);
}
/* Call a maker-specific routine to assign an identifying number for */
/* a specific model of a given maker's camera. The camera make is */
/* identified by the number assigned by make_number(), and is used to */
/* dispatch the maker-specific routine, which is then free to pick an */
/* identifying number based upon the "Model" tag and possibly the */
/* "Software" tag. The numbers are assigned in "maker.h". Model */
/* numbers are used only to determine 'quirks' in some notes which */
/* cannot reliably be discovered by examining the note scheme, */
/* The softwarename field has proven unreliable for any purpose, is */
/* not used anywhere in the program (other than to print it), and */
/* could disappear from these argument lists. Some image edit */
/* software will change this field, some won't; in any case, */
/* maker-supplied versions do not appear to tell us much. */
int
model_number(int make,char *modelstring,char *softwarename)
{
int number = NO_MODEL;
if(modelstring == NULL)
modelstring = NULLSTRING;
if(softwarename == NULL)
softwarename = NULLSTRING;
switch(make)
{
case MAKER_AGFA:
number = agfa_model_number(modelstring,softwarename);
break;
case MAKER_ASAHI: /* PENTAX */
case MAKER_PENTAX: /* PENTAX */
number = asahi_model_number(modelstring,softwarename);
break;
case MAKER_CANON:
number = canon_model_number(modelstring,softwarename);
break;
case MAKER_CASIO:
number = casio_model_number(modelstring,softwarename);
break;
case MAKER_EPSON:
number = epson_model_number(modelstring,softwarename);
break;
case MAKER_FUJIFILM:
number = fujifilm_model_number(modelstring,softwarename);
break;
case MAKER_HP: /* proprietary makernotes */
number = hp_model_number(modelstring,softwarename);
break;
case MAKER_KODAK: /* proprietary makernotes */
number = kodak_model_number(modelstring,softwarename);
break;
case MAKER_KONICA: /* proprietary notes: old Konica models */
number = konica_model_number(modelstring,softwarename);
break;
case MAKER_KYOCERA:
number = kyocera_model_number(modelstring,softwarename);
break;
case MAKER_LEICA:
number = leica_model_number(modelstring,softwarename);
break;
case MAKER_MINOLTA:
number = minolta_model_number(modelstring,softwarename);
break;
case MAKER_NIKON:
number = nikon_model_number(modelstring,softwarename);
break;
case MAKER_OLYMPUS:
number = olympus_model_number(modelstring,softwarename);
break;
case MAKER_PANASONIC:
number = panasonic_model_number(modelstring,softwarename);
break;
case MAKER_RICOH: /* no or non-IFD makernote data */
number = ricoh_model_number(modelstring,softwarename);
break;
case MAKER_SANYO:
number = sanyo_model_number(modelstring,softwarename);
break;
case MAKER_SIGMA:
number = sigma_model_number(modelstring,softwarename);
break;
case MAKER_SONY: /* no makernote data */
/* DSC-V3 has makernote in IFD format, but nothing is */
/* known about meaning (there are no maker-specific */
/* routines here yet) */
number = sony_model_number(modelstring,softwarename);
break;
case MAKER_TOSHIBA:
number = toshiba_model_number(modelstring,softwarename);
break;
case MAKER_TRAVELER: /* proprietary makernote */
number = traveler_model_number(modelstring,softwarename);
break;
default: /* NO_MODEL */
break;
}
return(number);
}
/* ********************************************************************/
/* Attempt to discover the format of a MakerNote. Some notes are in */
/* normal TIFF IFD format, with tags assigned by the maker, and */
/* values interpreted in maker-specific ways. Some makers begin with */
/* a few bytes containing an ascii string identifying the maker, with */
/* a normal IFD following at a specific offset. One camera I've seen */
/* begins with such an ascii id, followed by an actual TIFF header, */
/* with the following IFD offsets then relative to that TIFF header. */
/* This latter scheme seems the most sensible, since it allows image */
/* editting software to move the MakerNote with little effort, and */
/* allows standard TIFF machinery to read them. */
/* Within the three schemes above, all of which include the basic */
/* format of a TIFF Image File Directory, makers have devised several */
/* ways to express their individuality. */
/* The most harmless is the length of the ID string, and the */
/* resulting offset from the start of the MakerNote blob to the start */
/* of the actual IFD. Some makers prove their independence by writing */
/* "offset" entries in the IFD (required when a value won't fit in */
/* the 12-byte entry) relative to the start of the MakerNote or even */
/* the start of the current entry. The TIFF specification requires */
/* that such offsets are relative to the beginning of the last */
/* in-scope TIFF header. */
/* At least one maker thumbs it's nose at the software world by */
/* gratuitously changing the byte order used when writing the */
/* MakerNote, compared to the remainder of the image file. */
/* Some makers write MakerNotes, but in a purely private, proprietary */
/* format. We cannot read those, except as a blob of useless junk. */
/* This routine uses some simple heuristics to attempt to intuit the */
/* format of a note, rather than a table of known make/model formats. */
/* If an Id string is found, an attempt is made to find a TIFF header */
/* or an apparently valid IFD. If found, the offset from the start of */
/* the blob is recorded, and if the byteorder is changed, that is */
/* noted as well */
/* Offset to the start of the IFD and byteorder are sufficient to */
/* read the directory entries (and print them) but the reference */
/* point for offsets to indirect data is difficult to determine if it */
/* differs from the TIFF specification. Specific information, */
/* according to camera make and model, is added for cameras which are */
/* known to write note- or entry-relative offsets. Some cameras also */
/* fail to write zeros for the "next IFD offset" normally included at */
/* the end of a TIFF IFD, so that fact is noted as well. */
/* If the note just doesn't look presentable, a (currently dummy) */
/* routine can be used to check for known sports. */
/* The information recorded in the maker_scheme structure at this */
/* point is sufficient to read and print the structure of the note */
/* (except for UNKNOWN schemes, of course). Interpreting the */
/* *meaning* of the tags and values is the responsibility of */
/* maker-specific routines. */
/* ********************************************************************/
/* ********************************************************************/
/* The maker_scheme structure may be of interest to maker-specific */
/* routines, but is not passed around, and should not be modified */
/* outside find_makerscheme. retrieve_makerscheme is provided to */
/* allow a *copy* of the structure to be retrieved after it has been */
/* filled. */
/* ********************************************************************/
/* Allow only find_makerscheme() to muck with the original scheme. */
/* Spcific routines are provided to alter note_version and/or tagset */
/* from anywhere in the program, although this is not currently */
/* required. */
static struct maker_scheme maker_scheme;
/* Clear the structure and mark it clear for process_makernote() */
void
clear_makerscheme()
{
memset(&maker_scheme,'\0',sizeof(struct maker_scheme));
maker_scheme.make = -1;
}
struct maker_scheme *
find_makerscheme(FILE *inptr,unsigned long note_offset,
unsigned long fileoffset_base,
unsigned short byteorder,
unsigned long maker_size,int make,int model)
{
struct ifd_entry *ifdentry;
int length_read,id_length,num_entries,start,maxchk_offset;
int tiffhdr_offset = 0;
unsigned long note_fileoffset = 0L;
unsigned long num_entry_offset = 0L;
unsigned long ifd_offset = 0L;
unsigned long scheme_type = UNKNOWN_SCHEME;
unsigned short alt_byteorder;
unsigned short note_byteorder = byteorder;
int chpr = 0;
char *id;
if(maker_scheme.make >= 0)
clear_makerscheme();
note_fileoffset = note_offset + fileoffset_base;
id= (char *)read_bytes(inptr,MAX_IDLEN,note_fileoffset);
length_read = id ? strlen(id) : 0;
/* check that string is printable, adjust id_length if nexessary */
if(PRINT_SCHEME_DEBUG)
{
PUSHCOLOR(HI_RED);
PUSHCOLOR(BG_WHITE);
chpr = newline(1);
chpr += printf("Scheme debug:");
chpr = newline(chpr);
chpr += printf("Initial id length = %d, ID=",length_read);
chpr += print_ascii(inptr,length_read,note_fileoffset);
chpr += printf(" at file offset %lu",note_fileoffset);
chpr = newline(chpr);
}
/* Check that the string is printable, and truncate at the first */
/* non-printable found */
id = check_printable(id,MAX_IDLEN);
id_length = strlen(id);
if((PRINT_SCHEME_DEBUG) && (id_length != length_read))
{
chpr += printf("\tchecked id length = %d",id_length);
chpr = newline(chpr);
}
switch(id_length)
{
case -1: /* read failed */
case 0: /* normal or unknown */
case 1:
case 2:
/* ###% allow 1 and 2 to be checked? */
scheme_type = PLAIN_IFD_SCHEME;
note_byteorder = byteorder;
#if 0
/* This is unwise */
if(PRINT_SCHEME_DEBUG)
{
chpr += printf(" force PLAIN IFD with no offset");
chpr = newline(chpr);
chpr += printf(" entry check offset 0: ");
}